1. One-step in situ growth of CoS on conductive substrate as an efficient counter electrode for dye-sensitized solar cells.
- Author
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Zheng, Linjie, Sun, Xiaohua, Chen, Linlin, Bao, Chao, Luo, Weilong, Huang, Niu, Sun, Panpan, Sun, Yihua, Fang, Liang, and Wang, Lei
- Subjects
SUBSTRATES (Materials science) ,ELECTRIC conductivity ,DYE-sensitized solar cells ,DOPING agents (Chemistry) ,FLUORINE ,COBALT sulfide ,TIN oxides ,X-ray diffraction - Abstract
Cobalt sulfide counter electrodes for the dye-sensitized solar cell (DSSC) were successfully prepared on fluorine-doped tin oxide (FTO) glass substrates by a facial one-step in situ solvothermal method. The influences of prepared temperature on the synthesized phase, surface morphology, electrocatalytic, and photovoltaic performances of the cobalt sulfide counter electrodes were investigated with X-ray diffraction (XRD), field-emission scanning electron microscopy (SEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), Tafel, and photocurrent density-voltage ( J- V) measurements. The results indicated that very thin CoS nanoparticle thin films grew on the FTO substrates and the CoS counter electrode prepared at 180 °C showed superior electrocatalytic activity, chemical stability, and photovoltaic performance. The DSSC based on the CoS counter electrode prepared at 180 °C exhibited an efficiency of 6.59 % which was comparable to the solar cell based on the sputtering Pt counter electrode (6.82 %). It indicated that CoS in situ growing on FTO glass substrate at 180 °C is a potential candidate to replace Pt as a low-cost and efficient counter electrode of DSSC. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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